NVIDIA GeForce 620M vs NVIDIA GeForce GT 640M
Comparative analysis of NVIDIA GeForce 620M and NVIDIA GeForce GT 640M videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory, Technologies. Benchmark videocards performance analysis: PassMark - G3D Mark, PassMark - G2D Mark, Geekbench - OpenCL, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Fps).
Differences
Reasons to consider the NVIDIA GeForce 620M
- 2.1x lower typical power consumption: 15 Watt vs 32 Watt
Thermal Design Power (TDP) | 15 Watt vs 32 Watt |
Reasons to consider the NVIDIA GeForce GT 640M
- 4x more pipelines: 384 vs 96
- 2x better floating-point performance: 480.0 gflops vs 240.0 gflops
- 2x more maximum memory size: 2 GB vs 1 GB
Pipelines | 384 vs 96 |
Floating-point performance | 480.0 gflops vs 240.0 gflops |
Maximum memory size | 2 GB vs 1 GB |
Compare benchmarks
GPU 1: NVIDIA GeForce 620M
GPU 2: NVIDIA GeForce GT 640M
Name | NVIDIA GeForce 620M | NVIDIA GeForce GT 640M |
---|---|---|
PassMark - G3D Mark | 924 | |
PassMark - G2D Mark | 198 | |
Geekbench - OpenCL | 3187 | |
CompuBench 1.5 Desktop - Face Detection (mPixels/s) | 7.861 | |
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) | 275.972 | |
CompuBench 1.5 Desktop - T-Rex (Frames/s) | 0.727 | |
CompuBench 1.5 Desktop - Video Composition (Frames/s) | 15.445 | |
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) | 17.381 | |
GFXBench 4.0 - Car Chase Offscreen (Frames) | 1476 | |
GFXBench 4.0 - Manhattan (Frames) | 1963 | |
GFXBench 4.0 - T-Rex (Frames) | 2580 | |
GFXBench 4.0 - Car Chase Offscreen (Fps) | 1476 | |
GFXBench 4.0 - Manhattan (Fps) | 1963 | |
GFXBench 4.0 - T-Rex (Fps) | 2580 |
Compare specifications (specs)
NVIDIA GeForce 620M | NVIDIA GeForce GT 640M | |
---|---|---|
Essentials |
||
Architecture | Fermi 2.0 | Kepler |
Code name | GF117 | GK107 |
Launch date | 22 March 2012 | 22 March 2012 |
Place in performance rating | not rated | 1346 |
Type | Desktop | Laptop |
Technical info |
||
Core clock speed | 625 MHz | |
Floating-point performance | 240.0 gflops | 480.0 gflops |
Manufacturing process technology | 28 nm | 28 nm |
Pipelines | 96 | 384 |
Texture fill rate | 10 GTexel / s | |
Thermal Design Power (TDP) | 15 Watt | 32 Watt |
Transistor count | 585 million | 1,270 million |
Boost clock speed | 645 MHz | |
CUDA cores | 384 | |
Video outputs and ports |
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Display Connectors | No outputs | No outputs |
HDCP | ||
HDMI | ||
Maximum VGA resolution | Up to 2048x1536 | |
Compatibility, dimensions and requirements |
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Interface | PCIe 2.0 x16 | PCIe 3.0 x16 |
Bus support | PCI Express 2.0, PCI Express 3.0 | |
Laptop size | medium sized | |
API support |
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DirectX | 12.0 (11_0) | 12 API |
OpenGL | 4.6 | 4.5 |
OpenCL | 1.1 | |
Memory |
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Maximum RAM amount | 1 GB | 2 GB |
Memory bandwidth | 14.4 GB / s | |
Memory bus width | 64 Bit | 128bit |
Memory clock speed | 1800 MHz | 1800 MHz |
Memory type | DDR3 | DDR3\GDDR5 |
Shared memory | 0 | |
Technologies |
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3D Blu-Ray | ||
3D Vision | ||
CUDA | ||
DirectCompute | ||
DirectX 11 | DirectX 11 | |
Optimus |